轮廓问题的源代码，输入文件的格式为第一行是轮廓个数，接下来的n行为对每一个轮廓的描述：起始坐标，高度，结束坐标。输出文件即为输入文件的轮廓-The outline of the issue of source code, input file format for the first line is the outline of the number, the next n behavior for each profile descr iption: The starting coordina